Libyan followers of Ansar al-Shariah Brigades and other Islamic militias hold a demonstration in Victory Square, against a film and a cartoon denigrating the Prophet Muhammad in Benghazi, Libya, Friday, Sept. 21, 2012. The attack that killed the U.S. ambassador and three other Americans has sparked a backlash among frustrated Libyans against the heavily armed gunmen, including Islamic extremists, who run rampant in their cities. more than 10,000 people poured into a main boulevard of Benghazi, demanding that militias disband as the public tries to do what Libya's weak central government has been unable to.(AP Photo/Mohammad Hannon)

Libyan followers of Ansar al-Shariah Brigades and other Islamic militias hold a demonstration in Victory Square, against a film and a cartoon denigrating the Prophet Muhammad in Benghazi, Libya, Friday, Sept. 21, 2012. The attack that killed the U.S. ambassador and three other Americans has sparked a backlash among frustrated Libyans against the heavily armed gunmen, including Islamic extremists, who run rampant in their cities. more than 10,000 people poured into a main boulevard of Benghazi, demanding that militias disband as the public tries to do what Libya's weak central government has been unable to.(AP Photo/Mohammad Hannon)